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Finding the Fourth Proportional to 612.03, 918.07 and 265.12

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Solution

The fourth proportional to 612.03, 918.07 and 265.12 is: 397.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.03 : 918.07 = 265.12 : x
  2. Step 2: Convert to fraction form
    612.03/918.07 = 265.12/x
  3. Step 3: Cross multiply
    612.03x = 918.07 × 265.12
  4. Step 4: Simplify right side
    612.03x = 243,398.72
  5. Step 5: Solve for x
    x = 243,398.72/612.03
  6. Step 6: Final answer
    x = 397.69

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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.