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Finding the Fourth Proportional to 707.86, 976.97 and 529.30

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Solution

The fourth proportional to 707.86, 976.97 and 529.30 is: 730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.86 : 976.97 = 529.30 : x
  2. Step 2: Convert to fraction form
    707.86/976.97 = 529.30/x
  3. Step 3: Cross multiply
    707.86x = 976.97 × 529.30
  4. Step 4: Simplify right side
    707.86x = 517,116.13
  5. Step 5: Solve for x
    x = 517,116.13/707.86
  6. Step 6: Final answer
    x = 730.53

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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.