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Finding the Fourth Proportional to 706.18, 972.32 and 641.38

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Solution

The fourth proportional to 706.18, 972.32 and 641.38 is: 883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.18 : 972.32 = 641.38 : x
  2. Step 2: Convert to fraction form
    706.18/972.32 = 641.38/x
  3. Step 3: Cross multiply
    706.18x = 972.32 × 641.38
  4. Step 4: Simplify right side
    706.18x = 623,626.60
  5. Step 5: Solve for x
    x = 623,626.60/706.18
  6. Step 6: Final answer
    x = 883.10

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1.5x scale

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.