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Finding the Fourth Proportional to 456.18, 683.06 and 339.95

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Solution

The fourth proportional to 456.18, 683.06 and 339.95 is: 509.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.18 : 683.06 = 339.95 : x
  2. Step 2: Convert to fraction form
    456.18/683.06 = 339.95/x
  3. Step 3: Cross multiply
    456.18x = 683.06 × 339.95
  4. Step 4: Simplify right side
    456.18x = 232,201.13
  5. Step 5: Solve for x
    x = 232,201.13/456.18
  6. Step 6: Final answer
    x = 509.01

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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.