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Finding the Fourth Proportional to 1,144.10, 1,715.12 and 558.77

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Solution

The fourth proportional to 1,144.10, 1,715.12 and 558.77 is: 837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.10 : 1,715.12 = 558.77 : x
  2. Step 2: Convert to fraction form
    1,144.10/1,715.12 = 558.77/x
  3. Step 3: Cross multiply
    1,144.10x = 1,715.12 × 558.77
  4. Step 4: Simplify right side
    1,144.10x = 958,346.23
  5. Step 5: Solve for x
    x = 958,346.23/1,144.10
  6. Step 6: Final answer
    x = 837.65

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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.