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Finding the Fourth Proportional to 617.84, 926.04 and 328.76

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Solution

The fourth proportional to 617.84, 926.04 and 328.76 is: 492.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.84 : 926.04 = 328.76 : x
  2. Step 2: Convert to fraction form
    617.84/926.04 = 328.76/x
  3. Step 3: Cross multiply
    617.84x = 926.04 × 328.76
  4. Step 4: Simplify right side
    617.84x = 304,444.91
  5. Step 5: Solve for x
    x = 304,444.91/617.84
  6. Step 6: Final answer
    x = 492.76

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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.