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Finding the Fourth Proportional to 1,868.88, 2,803.32 and 552.66

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Solution

The fourth proportional to 1,868.88, 2,803.32 and 552.66 is: 828.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.88 : 2,803.32 = 552.66 : x
  2. Step 2: Convert to fraction form
    1,868.88/2,803.32 = 552.66/x
  3. Step 3: Cross multiply
    1,868.88x = 2,803.32 × 552.66
  4. Step 4: Simplify right side
    1,868.88x = 1,549,282.83
  5. Step 5: Solve for x
    x = 1,549,282.83/1,868.88
  6. Step 6: Final answer
    x = 828.99

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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.