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Finding the Fourth Proportional to 710.30, 979.23 and 474.26

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Solution

The fourth proportional to 710.30, 979.23 and 474.26 is: 653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.30 : 979.23 = 474.26 : x
  2. Step 2: Convert to fraction form
    710.30/979.23 = 474.26/x
  3. Step 3: Cross multiply
    710.30x = 979.23 × 474.26
  4. Step 4: Simplify right side
    710.30x = 464,404.72
  5. Step 5: Solve for x
    x = 464,404.72/710.30
  6. Step 6: Final answer
    x = 653.82

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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.