Home / 1,110.40-1,665.35-493.77

Finding the Fourth Proportional to 1,110.40, 1,665.35 and 493.77

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Solution

The fourth proportional to 1,110.40, 1,665.35 and 493.77 is: 740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.40 : 1,665.35 = 493.77 : x
  2. Step 2: Convert to fraction form
    1,110.40/1,665.35 = 493.77/x
  3. Step 3: Cross multiply
    1,110.40x = 1,665.35 × 493.77
  4. Step 4: Simplify right side
    1,110.40x = 822,305.50
  5. Step 5: Solve for x
    x = 822,305.50/1,110.40
  6. Step 6: Final answer
    x = 740.55

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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.