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Finding the Fourth Proportional to 585.72, 807.03 and 438.12

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Solution

The fourth proportional to 585.72, 807.03 and 438.12 is: 603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.72 : 807.03 = 438.12 : x
  2. Step 2: Convert to fraction form
    585.72/807.03 = 438.12/x
  3. Step 3: Cross multiply
    585.72x = 807.03 × 438.12
  4. Step 4: Simplify right side
    585.72x = 353,575.98
  5. Step 5: Solve for x
    x = 353,575.98/585.72
  6. Step 6: Final answer
    x = 603.66

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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.