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Finding the Fourth Proportional to 699.27, 1,048.91 and 457.33

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Solution

The fourth proportional to 699.27, 1,048.91 and 457.33 is: 686.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.27 : 1,048.91 = 457.33 : x
  2. Step 2: Convert to fraction form
    699.27/1,048.91 = 457.33/x
  3. Step 3: Cross multiply
    699.27x = 1,048.91 × 457.33
  4. Step 4: Simplify right side
    699.27x = 479,698.01
  5. Step 5: Solve for x
    x = 479,698.01/699.27
  6. Step 6: Final answer
    x = 686.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.