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Finding the Fourth Proportional to 714.78, 985.77 and 466.01

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Solution

The fourth proportional to 714.78, 985.77 and 466.01 is: 642.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.78 : 985.77 = 466.01 : x
  2. Step 2: Convert to fraction form
    714.78/985.77 = 466.01/x
  3. Step 3: Cross multiply
    714.78x = 985.77 × 466.01
  4. Step 4: Simplify right side
    714.78x = 459,378.68
  5. Step 5: Solve for x
    x = 459,378.68/714.78
  6. Step 6: Final answer
    x = 642.69

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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.