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Finding the Fourth Proportional to 1,014.38, 1,400.01 and 572.40

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Solution

The fourth proportional to 1,014.38, 1,400.01 and 572.40 is: 790.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.38 : 1,400.01 = 572.40 : x
  2. Step 2: Convert to fraction form
    1,014.38/1,400.01 = 572.40/x
  3. Step 3: Cross multiply
    1,014.38x = 1,400.01 × 572.40
  4. Step 4: Simplify right side
    1,014.38x = 801,365.72
  5. Step 5: Solve for x
    x = 801,365.72/1,014.38
  6. Step 6: Final answer
    x = 790.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.