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Finding the Fourth Proportional to 712.29, 982.87 and 417.54

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Solution

The fourth proportional to 712.29, 982.87 and 417.54 is: 576.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.29 : 982.87 = 417.54 : x
  2. Step 2: Convert to fraction form
    712.29/982.87 = 417.54/x
  3. Step 3: Cross multiply
    712.29x = 982.87 × 417.54
  4. Step 4: Simplify right side
    712.29x = 410,386.50
  5. Step 5: Solve for x
    x = 410,386.50/712.29
  6. Step 6: Final answer
    x = 576.15

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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.