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Finding the Fourth Proportional to 456.40, 683.88 and 293.95

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Solution

The fourth proportional to 456.40, 683.88 and 293.95 is: 440.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.40 : 683.88 = 293.95 : x
  2. Step 2: Convert to fraction form
    456.40/683.88 = 293.95/x
  3. Step 3: Cross multiply
    456.40x = 683.88 × 293.95
  4. Step 4: Simplify right side
    456.40x = 201,026.53
  5. Step 5: Solve for x
    x = 201,026.53/456.40
  6. Step 6: Final answer
    x = 440.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.