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Finding the Fourth Proportional to 870.04, 1,304.22 and 292.52

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Solution

The fourth proportional to 870.04, 1,304.22 and 292.52 is: 438.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    870.04 : 1,304.22 = 292.52 : x
  2. Step 2: Convert to fraction form
    870.04/1,304.22 = 292.52/x
  3. Step 3: Cross multiply
    870.04x = 1,304.22 × 292.52
  4. Step 4: Simplify right side
    870.04x = 381,510.43
  5. Step 5: Solve for x
    x = 381,510.43/870.04
  6. Step 6: Final answer
    x = 438.50

Related Problems

Find fourth proportional to 435.02, 652.11 and 146.26
Half scale
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Double scale
Find fourth proportional to 871.04, 1,305.72 and 293.52
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.