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Finding the Fourth Proportional to 1,014.72, 1,400.31 and 572.62

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Solution

The fourth proportional to 1,014.72, 1,400.31 and 572.62 is: 790.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.72 : 1,400.31 = 572.62 : x
  2. Step 2: Convert to fraction form
    1,014.72/1,400.31 = 572.62/x
  3. Step 3: Cross multiply
    1,014.72x = 1,400.31 × 572.62
  4. Step 4: Simplify right side
    1,014.72x = 801,838.51
  5. Step 5: Solve for x
    x = 801,838.51/1,014.72
  6. Step 6: Final answer
    x = 790.21

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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.