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Finding the Fourth Proportional to 1,497.72, 2,246.94 and 457.74

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Solution

The fourth proportional to 1,497.72, 2,246.94 and 457.74 is: 686.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,497.72 : 2,246.94 = 457.74 : x
  2. Step 2: Convert to fraction form
    1,497.72/2,246.94 = 457.74/x
  3. Step 3: Cross multiply
    1,497.72x = 2,246.94 × 457.74
  4. Step 4: Simplify right side
    1,497.72x = 1,028,510.41
  5. Step 5: Solve for x
    x = 1,028,510.41/1,497.72
  6. Step 6: Final answer
    x = 686.72

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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.