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Finding the Fourth Proportional to 372.87, 514.26 and 307.26

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Solution

The fourth proportional to 372.87, 514.26 and 307.26 is: 423.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.87 : 514.26 = 307.26 : x
  2. Step 2: Convert to fraction form
    372.87/514.26 = 307.26/x
  3. Step 3: Cross multiply
    372.87x = 514.26 × 307.26
  4. Step 4: Simplify right side
    372.87x = 158,011.53
  5. Step 5: Solve for x
    x = 158,011.53/372.87
  6. Step 6: Final answer
    x = 423.77

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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.