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Finding the Fourth Proportional to 346.14, 515.43 and 328.32

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Solution

The fourth proportional to 346.14, 515.43 and 328.32 is: 488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.14 : 515.43 = 328.32 : x
  2. Step 2: Convert to fraction form
    346.14/515.43 = 328.32/x
  3. Step 3: Cross multiply
    346.14x = 515.43 × 328.32
  4. Step 4: Simplify right side
    346.14x = 169,225.98
  5. Step 5: Solve for x
    x = 169,225.98/346.14
  6. Step 6: Final answer
    x = 488.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.