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Finding the Fourth Proportional to 632.78, 873.06 and 384.02

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Solution

The fourth proportional to 632.78, 873.06 and 384.02 is: 529.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.78 : 873.06 = 384.02 : x
  2. Step 2: Convert to fraction form
    632.78/873.06 = 384.02/x
  3. Step 3: Cross multiply
    632.78x = 873.06 × 384.02
  4. Step 4: Simplify right side
    632.78x = 335,272.50
  5. Step 5: Solve for x
    x = 335,272.50/632.78
  6. Step 6: Final answer
    x = 529.84

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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.