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Finding the Fourth Proportional to 732.76, 1,010.64 and 470.80

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Solution

The fourth proportional to 732.76, 1,010.64 and 470.80 is: 649.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.76 : 1,010.64 = 470.80 : x
  2. Step 2: Convert to fraction form
    732.76/1,010.64 = 470.80/x
  3. Step 3: Cross multiply
    732.76x = 1,010.64 × 470.80
  4. Step 4: Simplify right side
    732.76x = 475,809.31
  5. Step 5: Solve for x
    x = 475,809.31/732.76
  6. Step 6: Final answer
    x = 649.34

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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.