Home / 1,125.02-1,686.20-474.98

Finding the Fourth Proportional to 1,125.02, 1,686.20 and 474.98

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Solution

The fourth proportional to 1,125.02, 1,686.20 and 474.98 is: 711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.02 : 1,686.20 = 474.98 : x
  2. Step 2: Convert to fraction form
    1,125.02/1,686.20 = 474.98/x
  3. Step 3: Cross multiply
    1,125.02x = 1,686.20 × 474.98
  4. Step 4: Simplify right side
    1,125.02x = 800,911.28
  5. Step 5: Solve for x
    x = 800,911.28/1,125.02
  6. Step 6: Final answer
    x = 711.91

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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.