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Finding the Fourth Proportional to 714.92, 986.50 and 404.44

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Solution

The fourth proportional to 714.92, 986.50 and 404.44 is: 558.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.92 : 986.50 = 404.44 : x
  2. Step 2: Convert to fraction form
    714.92/986.50 = 404.44/x
  3. Step 3: Cross multiply
    714.92x = 986.50 × 404.44
  4. Step 4: Simplify right side
    714.92x = 398,980.06
  5. Step 5: Solve for x
    x = 398,980.06/714.92
  6. Step 6: Final answer
    x = 558.08

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1.5x scale

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.