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Finding the Fourth Proportional to 712.10, 982.68 and 463.52

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Solution

The fourth proportional to 712.10, 982.68 and 463.52 is: 639.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.10 : 982.68 = 463.52 : x
  2. Step 2: Convert to fraction form
    712.10/982.68 = 463.52/x
  3. Step 3: Cross multiply
    712.10x = 982.68 × 463.52
  4. Step 4: Simplify right side
    712.10x = 455,491.83
  5. Step 5: Solve for x
    x = 455,491.83/712.10
  6. Step 6: Final answer
    x = 639.65

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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.