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Finding the Fourth Proportional to 877.51, 1,315.94 and 292.41

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Solution

The fourth proportional to 877.51, 1,315.94 and 292.41 is: 438.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.51 : 1,315.94 = 292.41 : x
  2. Step 2: Convert to fraction form
    877.51/1,315.94 = 292.41/x
  3. Step 3: Cross multiply
    877.51x = 1,315.94 × 292.41
  4. Step 4: Simplify right side
    877.51x = 384,794.02
  5. Step 5: Solve for x
    x = 384,794.02/877.51
  6. Step 6: Final answer
    x = 438.51

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Double scale
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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.