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Finding the Fourth Proportional to 547.40, 821.25 and 304.10

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Solution

The fourth proportional to 547.40, 821.25 and 304.10 is: 456.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.40 : 821.25 = 304.10 : x
  2. Step 2: Convert to fraction form
    547.40/821.25 = 304.10/x
  3. Step 3: Cross multiply
    547.40x = 821.25 × 304.10
  4. Step 4: Simplify right side
    547.40x = 249,738.02
  5. Step 5: Solve for x
    x = 249,738.02/547.40
  6. Step 6: Final answer
    x = 456.22

Related Problems

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Double scale
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Similar ratio
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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.