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Finding the Fourth Proportional to 486.19, 670.93 and 265.14

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Solution

The fourth proportional to 486.19, 670.93 and 265.14 is: 365.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.19 : 670.93 = 265.14 : x
  2. Step 2: Convert to fraction form
    486.19/670.93 = 265.14/x
  3. Step 3: Cross multiply
    486.19x = 670.93 × 265.14
  4. Step 4: Simplify right side
    486.19x = 177,890.38
  5. Step 5: Solve for x
    x = 177,890.38/486.19
  6. Step 6: Final answer
    x = 365.89

Related Problems

Find fourth proportional to 243.10, 335.47 and 132.57
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Double scale
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Similar ratio
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1.5x scale

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.