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Finding the Fourth Proportional to 612.72, 924.18 and 549.36

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Solution

The fourth proportional to 612.72, 924.18 and 549.36 is: 828.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.72 : 924.18 = 549.36 : x
  2. Step 2: Convert to fraction form
    612.72/924.18 = 549.36/x
  3. Step 3: Cross multiply
    612.72x = 924.18 × 549.36
  4. Step 4: Simplify right side
    612.72x = 507,707.52
  5. Step 5: Solve for x
    x = 507,707.52/612.72
  6. Step 6: Final answer
    x = 828.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.