Home / 740.14-1,020.76-528.18

Finding the Fourth Proportional to 740.14, 1,020.76 and 528.18

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Solution

The fourth proportional to 740.14, 1,020.76 and 528.18 is: 728.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.14 : 1,020.76 = 528.18 : x
  2. Step 2: Convert to fraction form
    740.14/1,020.76 = 528.18/x
  3. Step 3: Cross multiply
    740.14x = 1,020.76 × 528.18
  4. Step 4: Simplify right side
    740.14x = 539,145.02
  5. Step 5: Solve for x
    x = 539,145.02/740.14
  6. Step 6: Final answer
    x = 728.44

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.