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Finding the Fourth Proportional to 1,651.91, 2,478.24 and 556.25

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Solution

The fourth proportional to 1,651.91, 2,478.24 and 556.25 is: 834.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.91 : 2,478.24 = 556.25 : x
  2. Step 2: Convert to fraction form
    1,651.91/2,478.24 = 556.25/x
  3. Step 3: Cross multiply
    1,651.91x = 2,478.24 × 556.25
  4. Step 4: Simplify right side
    1,651.91x = 1,378,510.00
  5. Step 5: Solve for x
    x = 1,378,510.00/1,651.91
  6. Step 6: Final answer
    x = 834.50

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1.5x scale

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.