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Finding the Fourth Proportional to 652.83, 977.27 and 421.26

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Solution

The fourth proportional to 652.83, 977.27 and 421.26 is: 630.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.83 : 977.27 = 421.26 : x
  2. Step 2: Convert to fraction form
    652.83/977.27 = 421.26/x
  3. Step 3: Cross multiply
    652.83x = 977.27 × 421.26
  4. Step 4: Simplify right side
    652.83x = 411,684.76
  5. Step 5: Solve for x
    x = 411,684.76/652.83
  6. Step 6: Final answer
    x = 630.62

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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.