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Finding the Fourth Proportional to 617.84, 926.32 and 309.47

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Solution

The fourth proportional to 617.84, 926.32 and 309.47 is: 463.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.84 : 926.32 = 309.47 : x
  2. Step 2: Convert to fraction form
    617.84/926.32 = 309.47/x
  3. Step 3: Cross multiply
    617.84x = 926.32 × 309.47
  4. Step 4: Simplify right side
    617.84x = 286,664.39
  5. Step 5: Solve for x
    x = 286,664.39/617.84
  6. Step 6: Final answer
    x = 463.98

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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.