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Finding the Fourth Proportional to 654.28, 976.85 and 562.60

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Solution

The fourth proportional to 654.28, 976.85 and 562.60 is: 839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.28 : 976.85 = 562.60 : x
  2. Step 2: Convert to fraction form
    654.28/976.85 = 562.60/x
  3. Step 3: Cross multiply
    654.28x = 976.85 × 562.60
  4. Step 4: Simplify right side
    654.28x = 549,575.81
  5. Step 5: Solve for x
    x = 549,575.81/654.28
  6. Step 6: Final answer
    x = 839.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.