Home / 751.15-1,126.80-340.35

Finding the Fourth Proportional to 751.15, 1,126.80 and 340.35

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Solution

The fourth proportional to 751.15, 1,126.80 and 340.35 is: 510.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.15 : 1,126.80 = 340.35 : x
  2. Step 2: Convert to fraction form
    751.15/1,126.80 = 340.35/x
  3. Step 3: Cross multiply
    751.15x = 1,126.80 × 340.35
  4. Step 4: Simplify right side
    751.15x = 383,506.38
  5. Step 5: Solve for x
    x = 383,506.38/751.15
  6. Step 6: Final answer
    x = 510.56

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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.