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Finding the Fourth Proportional to 870.13, 1,304.25 and 335.53

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Solution

The fourth proportional to 870.13, 1,304.25 and 335.53 is: 502.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    870.13 : 1,304.25 = 335.53 : x
  2. Step 2: Convert to fraction form
    870.13/1,304.25 = 335.53/x
  3. Step 3: Cross multiply
    870.13x = 1,304.25 × 335.53
  4. Step 4: Simplify right side
    870.13x = 437,615.00
  5. Step 5: Solve for x
    x = 437,615.00/870.13
  6. Step 6: Final answer
    x = 502.93

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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.