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Finding the Fourth Proportional to 487.19, 672.25 and 462.57

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Solution

The fourth proportional to 487.19, 672.25 and 462.57 is: 638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.19 : 672.25 = 462.57 : x
  2. Step 2: Convert to fraction form
    487.19/672.25 = 462.57/x
  3. Step 3: Cross multiply
    487.19x = 672.25 × 462.57
  4. Step 4: Simplify right side
    487.19x = 310,961.53
  5. Step 5: Solve for x
    x = 310,961.53/487.19
  6. Step 6: Final answer
    x = 638.27

Related Problems

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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.