Home / 740.16-1,110.78-548.28

Finding the Fourth Proportional to 740.16, 1,110.78 and 548.28

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Solution

The fourth proportional to 740.16, 1,110.78 and 548.28 is: 822.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.16 : 1,110.78 = 548.28 : x
  2. Step 2: Convert to fraction form
    740.16/1,110.78 = 548.28/x
  3. Step 3: Cross multiply
    740.16x = 1,110.78 × 548.28
  4. Step 4: Simplify right side
    740.16x = 609,018.46
  5. Step 5: Solve for x
    x = 609,018.46/740.16
  6. Step 6: Final answer
    x = 822.82

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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.