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Finding the Fourth Proportional to 714.16, 984.88 and 465.39

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Solution

The fourth proportional to 714.16, 984.88 and 465.39 is: 641.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.16 : 984.88 = 465.39 : x
  2. Step 2: Convert to fraction form
    714.16/984.88 = 465.39/x
  3. Step 3: Cross multiply
    714.16x = 984.88 × 465.39
  4. Step 4: Simplify right side
    714.16x = 458,352.14
  5. Step 5: Solve for x
    x = 458,352.14/714.16
  6. Step 6: Final answer
    x = 641.81

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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.