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Finding the Fourth Proportional to 838.99, 1,158.49 and 544.76

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Solution

The fourth proportional to 838.99, 1,158.49 and 544.76 is: 752.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    838.99 : 1,158.49 = 544.76 : x
  2. Step 2: Convert to fraction form
    838.99/1,158.49 = 544.76/x
  3. Step 3: Cross multiply
    838.99x = 1,158.49 × 544.76
  4. Step 4: Simplify right side
    838.99x = 631,099.01
  5. Step 5: Solve for x
    x = 631,099.01/838.99
  6. Step 6: Final answer
    x = 752.21

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1.5x scale

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.