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Finding the Fourth Proportional to 1,298.55, 1,947.86 and 568.14

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Solution

The fourth proportional to 1,298.55, 1,947.86 and 568.14 is: 852.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.55 : 1,947.86 = 568.14 : x
  2. Step 2: Convert to fraction form
    1,298.55/1,947.86 = 568.14/x
  3. Step 3: Cross multiply
    1,298.55x = 1,947.86 × 568.14
  4. Step 4: Simplify right side
    1,298.55x = 1,106,657.18
  5. Step 5: Solve for x
    x = 1,106,657.18/1,298.55
  6. Step 6: Final answer
    x = 852.23

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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.