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Finding the Fourth Proportional to 346.75, 520.36 and 260.19

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Solution

The fourth proportional to 346.75, 520.36 and 260.19 is: 390.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.75 : 520.36 = 260.19 : x
  2. Step 2: Convert to fraction form
    346.75/520.36 = 260.19/x
  3. Step 3: Cross multiply
    346.75x = 520.36 × 260.19
  4. Step 4: Simplify right side
    346.75x = 135,391.82
  5. Step 5: Solve for x
    x = 135,391.82/346.75
  6. Step 6: Final answer
    x = 390.46

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.