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Finding the Fourth Proportional to 699.18, 1,049.04 and 374.16

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Solution

The fourth proportional to 699.18, 1,049.04 and 374.16 is: 561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.18 : 1,049.04 = 374.16 : x
  2. Step 2: Convert to fraction form
    699.18/1,049.04 = 374.16/x
  3. Step 3: Cross multiply
    699.18x = 1,049.04 × 374.16
  4. Step 4: Simplify right side
    699.18x = 392,508.81
  5. Step 5: Solve for x
    x = 392,508.81/699.18
  6. Step 6: Final answer
    x = 561.38

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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.