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Finding the Fourth Proportional to 528.30, 787.82 and 463.59

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Solution

The fourth proportional to 528.30, 787.82 and 463.59 is: 691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.30 : 787.82 = 463.59 : x
  2. Step 2: Convert to fraction form
    528.30/787.82 = 463.59/x
  3. Step 3: Cross multiply
    528.30x = 787.82 × 463.59
  4. Step 4: Simplify right side
    528.30x = 365,223.16
  5. Step 5: Solve for x
    x = 365,223.16/528.30
  6. Step 6: Final answer
    x = 691.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.