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Finding the Fourth Proportional to 629.98, 867.51 and 560.32

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Solution

The fourth proportional to 629.98, 867.51 and 560.32 is: 771.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.98 : 867.51 = 560.32 : x
  2. Step 2: Convert to fraction form
    629.98/867.51 = 560.32/x
  3. Step 3: Cross multiply
    629.98x = 867.51 × 560.32
  4. Step 4: Simplify right side
    629.98x = 486,081.03
  5. Step 5: Solve for x
    x = 486,081.03/629.98
  6. Step 6: Final answer
    x = 771.58

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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.