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Finding the Fourth Proportional to 373.40, 514.36 and 320.76

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Solution

The fourth proportional to 373.40, 514.36 and 320.76 is: 441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.40 : 514.36 = 320.76 : x
  2. Step 2: Convert to fraction form
    373.40/514.36 = 320.76/x
  3. Step 3: Cross multiply
    373.40x = 514.36 × 320.76
  4. Step 4: Simplify right side
    373.40x = 164,986.11
  5. Step 5: Solve for x
    x = 164,986.11/373.40
  6. Step 6: Final answer
    x = 441.85

Related Problems

Find fourth proportional to 186.70, 257.18 and 160.38
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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.