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Finding the Fourth Proportional to 708.92, 978.49 and 473.26

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Solution

The fourth proportional to 708.92, 978.49 and 473.26 is: 653.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.92 : 978.49 = 473.26 : x
  2. Step 2: Convert to fraction form
    708.92/978.49 = 473.26/x
  3. Step 3: Cross multiply
    708.92x = 978.49 × 473.26
  4. Step 4: Simplify right side
    708.92x = 463,080.18
  5. Step 5: Solve for x
    x = 463,080.18/708.92
  6. Step 6: Final answer
    x = 653.22

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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.