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Finding the Fourth Proportional to 346.94, 479.18 and 253.53

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Solution

The fourth proportional to 346.94, 479.18 and 253.53 is: 350.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.94 : 479.18 = 253.53 : x
  2. Step 2: Convert to fraction form
    346.94/479.18 = 253.53/x
  3. Step 3: Cross multiply
    346.94x = 479.18 × 253.53
  4. Step 4: Simplify right side
    346.94x = 121,487.14
  5. Step 5: Solve for x
    x = 121,487.14/346.94
  6. Step 6: Final answer
    x = 350.17

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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.