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Finding the Fourth Proportional to 612.22, 918.42 and 304.24

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Solution

The fourth proportional to 612.22, 918.42 and 304.24 is: 456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.22 : 918.42 = 304.24 : x
  2. Step 2: Convert to fraction form
    612.22/918.42 = 304.24/x
  3. Step 3: Cross multiply
    612.22x = 918.42 × 304.24
  4. Step 4: Simplify right side
    612.22x = 279,420.10
  5. Step 5: Solve for x
    x = 279,420.10/612.22
  6. Step 6: Final answer
    x = 456.40

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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.