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Finding the Fourth Proportional to 617.04, 923.76 and 485.28

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Solution

The fourth proportional to 617.04, 923.76 and 485.28 is: 726.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.04 : 923.76 = 485.28 : x
  2. Step 2: Convert to fraction form
    617.04/923.76 = 485.28/x
  3. Step 3: Cross multiply
    617.04x = 923.76 × 485.28
  4. Step 4: Simplify right side
    617.04x = 448,282.25
  5. Step 5: Solve for x
    x = 448,282.25/617.04
  6. Step 6: Final answer
    x = 726.50

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.