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Finding the Fourth Proportional to 625.52, 864.20 and 528.93

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Solution

The fourth proportional to 625.52, 864.20 and 528.93 is: 730.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.52 : 864.20 = 528.93 : x
  2. Step 2: Convert to fraction form
    625.52/864.20 = 528.93/x
  3. Step 3: Cross multiply
    625.52x = 864.20 × 528.93
  4. Step 4: Simplify right side
    625.52x = 457,102.63
  5. Step 5: Solve for x
    x = 457,102.63/625.52
  6. Step 6: Final answer
    x = 730.75

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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.