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Finding the Fourth Proportional to 529.31, 788.96 and 503.31

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Solution

The fourth proportional to 529.31, 788.96 and 503.31 is: 750.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.31 : 788.96 = 503.31 : x
  2. Step 2: Convert to fraction form
    529.31/788.96 = 503.31/x
  3. Step 3: Cross multiply
    529.31x = 788.96 × 503.31
  4. Step 4: Simplify right side
    529.31x = 397,088.94
  5. Step 5: Solve for x
    x = 397,088.94/529.31
  6. Step 6: Final answer
    x = 750.21

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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.