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Finding the Fourth Proportional to 712.42, 983.14 and 417.69

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Solution

The fourth proportional to 712.42, 983.14 and 417.69 is: 576.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.42 : 983.14 = 417.69 : x
  2. Step 2: Convert to fraction form
    712.42/983.14 = 417.69/x
  3. Step 3: Cross multiply
    712.42x = 983.14 × 417.69
  4. Step 4: Simplify right side
    712.42x = 410,645.29
  5. Step 5: Solve for x
    x = 410,645.29/712.42
  6. Step 6: Final answer
    x = 576.41

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Double scale
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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.