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Finding the Fourth Proportional to 710.82, 1,061.44 and 581.09

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Solution

The fourth proportional to 710.82, 1,061.44 and 581.09 is: 867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.82 : 1,061.44 = 581.09 : x
  2. Step 2: Convert to fraction form
    710.82/1,061.44 = 581.09/x
  3. Step 3: Cross multiply
    710.82x = 1,061.44 × 581.09
  4. Step 4: Simplify right side
    710.82x = 616,785.41
  5. Step 5: Solve for x
    x = 616,785.41/710.82
  6. Step 6: Final answer
    x = 867.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.