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Finding the Fourth Proportional to 555.86, 767.55 and 346.12

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Solution

The fourth proportional to 555.86, 767.55 and 346.12 is: 477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.86 : 767.55 = 346.12 : x
  2. Step 2: Convert to fraction form
    555.86/767.55 = 346.12/x
  3. Step 3: Cross multiply
    555.86x = 767.55 × 346.12
  4. Step 4: Simplify right side
    555.86x = 265,660.57
  5. Step 5: Solve for x
    x = 265,660.57/555.86
  6. Step 6: Final answer
    x = 477.93

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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.