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Finding the Fourth Proportional to 789.42, 1,088.96 and 524.30

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Solution

The fourth proportional to 789.42, 1,088.96 and 524.30 is: 723.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.42 : 1,088.96 = 524.30 : x
  2. Step 2: Convert to fraction form
    789.42/1,088.96 = 524.30/x
  3. Step 3: Cross multiply
    789.42x = 1,088.96 × 524.30
  4. Step 4: Simplify right side
    789.42x = 570,941.73
  5. Step 5: Solve for x
    x = 570,941.73/789.42
  6. Step 6: Final answer
    x = 723.24

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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.