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Finding the Fourth Proportional to 582.78, 805.10 and 451.16

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Solution

The fourth proportional to 582.78, 805.10 and 451.16 is: 623.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.78 : 805.10 = 451.16 : x
  2. Step 2: Convert to fraction form
    582.78/805.10 = 451.16/x
  3. Step 3: Cross multiply
    582.78x = 805.10 × 451.16
  4. Step 4: Simplify right side
    582.78x = 363,228.92
  5. Step 5: Solve for x
    x = 363,228.92/582.78
  6. Step 6: Final answer
    x = 623.27

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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.