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Finding the Fourth Proportional to 847.76, 1,270.52 and 360.08

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Solution

The fourth proportional to 847.76, 1,270.52 and 360.08 is: 539.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.76 : 1,270.52 = 360.08 : x
  2. Step 2: Convert to fraction form
    847.76/1,270.52 = 360.08/x
  3. Step 3: Cross multiply
    847.76x = 1,270.52 × 360.08
  4. Step 4: Simplify right side
    847.76x = 457,488.84
  5. Step 5: Solve for x
    x = 457,488.84/847.76
  6. Step 6: Final answer
    x = 539.64

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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.