Home / 1,089.15-1,632.35-510.75

Finding the Fourth Proportional to 1,089.15, 1,632.35 and 510.75

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Solution

The fourth proportional to 1,089.15, 1,632.35 and 510.75 is: 765.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.15 : 1,632.35 = 510.75 : x
  2. Step 2: Convert to fraction form
    1,089.15/1,632.35 = 510.75/x
  3. Step 3: Cross multiply
    1,089.15x = 1,632.35 × 510.75
  4. Step 4: Simplify right side
    1,089.15x = 833,720.21
  5. Step 5: Solve for x
    x = 833,720.21/1,089.15
  6. Step 6: Final answer
    x = 765.48

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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.