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Finding the Fourth Proportional to 1,572.24, 2,357.96 and 648.06

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Solution

The fourth proportional to 1,572.24, 2,357.96 and 648.06 is: 971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.24 : 2,357.96 = 648.06 : x
  2. Step 2: Convert to fraction form
    1,572.24/2,357.96 = 648.06/x
  3. Step 3: Cross multiply
    1,572.24x = 2,357.96 × 648.06
  4. Step 4: Simplify right side
    1,572.24x = 1,528,096.32
  5. Step 5: Solve for x
    x = 1,528,096.32/1,572.24
  6. Step 6: Final answer
    x = 971.92

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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.