Home / 740.14-1,110.60-307.21

Finding the Fourth Proportional to 740.14, 1,110.60 and 307.21

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Solution

The fourth proportional to 740.14, 1,110.60 and 307.21 is: 460.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.14 : 1,110.60 = 307.21 : x
  2. Step 2: Convert to fraction form
    740.14/1,110.60 = 307.21/x
  3. Step 3: Cross multiply
    740.14x = 1,110.60 × 307.21
  4. Step 4: Simplify right side
    740.14x = 341,187.43
  5. Step 5: Solve for x
    x = 341,187.43/740.14
  6. Step 6: Final answer
    x = 460.98

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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.