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Finding the Fourth Proportional to 677.32, 935.46 and 529.74

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Solution

The fourth proportional to 677.32, 935.46 and 529.74 is: 731.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.32 : 935.46 = 529.74 : x
  2. Step 2: Convert to fraction form
    677.32/935.46 = 529.74/x
  3. Step 3: Cross multiply
    677.32x = 935.46 × 529.74
  4. Step 4: Simplify right side
    677.32x = 495,547.93
  5. Step 5: Solve for x
    x = 495,547.93/677.32
  6. Step 6: Final answer
    x = 731.64

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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.