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Finding the Fourth Proportional to 913.03, 1,368.60 and 502.03

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Solution

The fourth proportional to 913.03, 1,368.60 and 502.03 is: 752.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.03 : 1,368.60 = 502.03 : x
  2. Step 2: Convert to fraction form
    913.03/1,368.60 = 502.03/x
  3. Step 3: Cross multiply
    913.03x = 1,368.60 × 502.03
  4. Step 4: Simplify right side
    913.03x = 687,071.42
  5. Step 5: Solve for x
    x = 687,071.42/913.03
  6. Step 6: Final answer
    x = 752.52

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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.