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Finding the Fourth Proportional to 555.17, 766.91 and 432.41

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Solution

The fourth proportional to 555.17, 766.91 and 432.41 is: 597.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.17 : 766.91 = 432.41 : x
  2. Step 2: Convert to fraction form
    555.17/766.91 = 432.41/x
  3. Step 3: Cross multiply
    555.17x = 766.91 × 432.41
  4. Step 4: Simplify right side
    555.17x = 331,616.80
  5. Step 5: Solve for x
    x = 331,616.80/555.17
  6. Step 6: Final answer
    x = 597.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.