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Finding the Fourth Proportional to 1,306.75, 1,959.63 and 526.48

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Solution

The fourth proportional to 1,306.75, 1,959.63 and 526.48 is: 789.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.75 : 1,959.63 = 526.48 : x
  2. Step 2: Convert to fraction form
    1,306.75/1,959.63 = 526.48/x
  3. Step 3: Cross multiply
    1,306.75x = 1,959.63 × 526.48
  4. Step 4: Simplify right side
    1,306.75x = 1,031,710.15
  5. Step 5: Solve for x
    x = 1,031,710.15/1,306.75
  6. Step 6: Final answer
    x = 789.52

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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.