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Finding the Fourth Proportional to 732.84, 1,011.06 and 449.16

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Solution

The fourth proportional to 732.84, 1,011.06 and 449.16 is: 619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.84 : 1,011.06 = 449.16 : x
  2. Step 2: Convert to fraction form
    732.84/1,011.06 = 449.16/x
  3. Step 3: Cross multiply
    732.84x = 1,011.06 × 449.16
  4. Step 4: Simplify right side
    732.84x = 454,127.71
  5. Step 5: Solve for x
    x = 454,127.71/732.84
  6. Step 6: Final answer
    x = 619.68

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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.