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Finding the Fourth Proportional to 1,277.67, 1,914.98 and 583.70

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Solution

The fourth proportional to 1,277.67, 1,914.98 and 583.70 is: 874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.67 : 1,914.98 = 583.70 : x
  2. Step 2: Convert to fraction form
    1,277.67/1,914.98 = 583.70/x
  3. Step 3: Cross multiply
    1,277.67x = 1,914.98 × 583.70
  4. Step 4: Simplify right side
    1,277.67x = 1,117,773.83
  5. Step 5: Solve for x
    x = 1,117,773.83/1,277.67
  6. Step 6: Final answer
    x = 874.85

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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.