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Finding the Fourth Proportional to 1,050.80, 1,444.92 and 1,018.40

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Solution

The fourth proportional to 1,050.80, 1,444.92 and 1,018.40 is: 1,400.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.80 : 1,444.92 = 1,018.40 : x
  2. Step 2: Convert to fraction form
    1,050.80/1,444.92 = 1,018.40/x
  3. Step 3: Cross multiply
    1,050.80x = 1,444.92 × 1,018.40
  4. Step 4: Simplify right side
    1,050.80x = 1,471,506.53
  5. Step 5: Solve for x
    x = 1,471,506.53/1,050.80
  6. Step 6: Final answer
    x = 1,400.37

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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.