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Finding the Fourth Proportional to 245.79, 339.14 and 147.53

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Solution

The fourth proportional to 245.79, 339.14 and 147.53 is: 203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.79 : 339.14 = 147.53 : x
  2. Step 2: Convert to fraction form
    245.79/339.14 = 147.53/x
  3. Step 3: Cross multiply
    245.79x = 339.14 × 147.53
  4. Step 4: Simplify right side
    245.79x = 50,030.89
  5. Step 5: Solve for x
    x = 50,030.89/245.79
  6. Step 6: Final answer
    x = 203.55

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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.