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Finding the Fourth Proportional to 585.06, 875.52 and 430.62

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Solution

The fourth proportional to 585.06, 875.52 and 430.62 is: 644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.06 : 875.52 = 430.62 : x
  2. Step 2: Convert to fraction form
    585.06/875.52 = 430.62/x
  3. Step 3: Cross multiply
    585.06x = 875.52 × 430.62
  4. Step 4: Simplify right side
    585.06x = 377,016.42
  5. Step 5: Solve for x
    x = 377,016.42/585.06
  6. Step 6: Final answer
    x = 644.41

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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.