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Finding the Fourth Proportional to 618.36, 924.12 and 554.12

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Solution

The fourth proportional to 618.36, 924.12 and 554.12 is: 828.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.36 : 924.12 = 554.12 : x
  2. Step 2: Convert to fraction form
    618.36/924.12 = 554.12/x
  3. Step 3: Cross multiply
    618.36x = 924.12 × 554.12
  4. Step 4: Simplify right side
    618.36x = 512,068.75
  5. Step 5: Solve for x
    x = 512,068.75/618.36
  6. Step 6: Final answer
    x = 828.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.