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Finding the Fourth Proportional to 1,852.50, 2,778.84 and 553.98

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Solution

The fourth proportional to 1,852.50, 2,778.84 and 553.98 is: 831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.50 : 2,778.84 = 553.98 : x
  2. Step 2: Convert to fraction form
    1,852.50/2,778.84 = 553.98/x
  3. Step 3: Cross multiply
    1,852.50x = 2,778.84 × 553.98
  4. Step 4: Simplify right side
    1,852.50x = 1,539,421.78
  5. Step 5: Solve for x
    x = 1,539,421.78/1,852.50
  6. Step 6: Final answer
    x = 831.00

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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.