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Finding the Fourth Proportional to 714.86, 986.18 and 466.09

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Solution

The fourth proportional to 714.86, 986.18 and 466.09 is: 642.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.86 : 986.18 = 466.09 : x
  2. Step 2: Convert to fraction form
    714.86/986.18 = 466.09/x
  3. Step 3: Cross multiply
    714.86x = 986.18 × 466.09
  4. Step 4: Simplify right side
    714.86x = 459,643.84
  5. Step 5: Solve for x
    x = 459,643.84/714.86
  6. Step 6: Final answer
    x = 642.99

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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.