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Finding the Fourth Proportional to 972.08, 1,341.28 and 579.04

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Solution

The fourth proportional to 972.08, 1,341.28 and 579.04 is: 798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.08 : 1,341.28 = 579.04 : x
  2. Step 2: Convert to fraction form
    972.08/1,341.28 = 579.04/x
  3. Step 3: Cross multiply
    972.08x = 1,341.28 × 579.04
  4. Step 4: Simplify right side
    972.08x = 776,654.77
  5. Step 5: Solve for x
    x = 776,654.77/972.08
  6. Step 6: Final answer
    x = 798.96

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