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Finding the Fourth Proportional to 1,123.04, 1,684.28 and 473.42

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Solution

The fourth proportional to 1,123.04, 1,684.28 and 473.42 is: 710.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123.04 : 1,684.28 = 473.42 : x
  2. Step 2: Convert to fraction form
    1,123.04/1,684.28 = 473.42/x
  3. Step 3: Cross multiply
    1,123.04x = 1,684.28 × 473.42
  4. Step 4: Simplify right side
    1,123.04x = 797,371.84
  5. Step 5: Solve for x
    x = 797,371.84/1,123.04
  6. Step 6: Final answer
    x = 710.01

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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.