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Finding the Fourth Proportional to 560.58, 839.71 and 328.76

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Solution

The fourth proportional to 560.58, 839.71 and 328.76 is: 492.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.58 : 839.71 = 328.76 : x
  2. Step 2: Convert to fraction form
    560.58/839.71 = 328.76/x
  3. Step 3: Cross multiply
    560.58x = 839.71 × 328.76
  4. Step 4: Simplify right side
    560.58x = 276,062.42
  5. Step 5: Solve for x
    x = 276,062.42/560.58
  6. Step 6: Final answer
    x = 492.46

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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.