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Finding the Fourth Proportional to 582.51, 803.74 and 385.92

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Solution

The fourth proportional to 582.51, 803.74 and 385.92 is: 532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.51 : 803.74 = 385.92 : x
  2. Step 2: Convert to fraction form
    582.51/803.74 = 385.92/x
  3. Step 3: Cross multiply
    582.51x = 803.74 × 385.92
  4. Step 4: Simplify right side
    582.51x = 310,179.34
  5. Step 5: Solve for x
    x = 310,179.34/582.51
  6. Step 6: Final answer
    x = 532.49

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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.