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Finding the Fourth Proportional to 651.38, 977.48 and 266.64

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Solution

The fourth proportional to 651.38, 977.48 and 266.64 is: 400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.38 : 977.48 = 266.64 : x
  2. Step 2: Convert to fraction form
    651.38/977.48 = 266.64/x
  3. Step 3: Cross multiply
    651.38x = 977.48 × 266.64
  4. Step 4: Simplify right side
    651.38x = 260,635.27
  5. Step 5: Solve for x
    x = 260,635.27/651.38
  6. Step 6: Final answer
    x = 400.13

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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.