Home / 1,266.45-1,899.80-525.91

Finding the Fourth Proportional to 1,266.45, 1,899.80 and 525.91

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Solution

The fourth proportional to 1,266.45, 1,899.80 and 525.91 is: 788.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.45 : 1,899.80 = 525.91 : x
  2. Step 2: Convert to fraction form
    1,266.45/1,899.80 = 525.91/x
  3. Step 3: Cross multiply
    1,266.45x = 1,899.80 × 525.91
  4. Step 4: Simplify right side
    1,266.45x = 999,111.69
  5. Step 5: Solve for x
    x = 999,111.69/1,266.45
  6. Step 6: Final answer
    x = 788.91

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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.