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Finding the Fourth Proportional to 645.16, 968.04 and 524.80

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Solution

The fourth proportional to 645.16, 968.04 and 524.80 is: 787.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.16 : 968.04 = 524.80 : x
  2. Step 2: Convert to fraction form
    645.16/968.04 = 524.80/x
  3. Step 3: Cross multiply
    645.16x = 968.04 × 524.80
  4. Step 4: Simplify right side
    645.16x = 508,027.39
  5. Step 5: Solve for x
    x = 508,027.39/645.16
  6. Step 6: Final answer
    x = 787.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.