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Finding the Fourth Proportional to 618.36, 924.78 and 560.94

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Solution

The fourth proportional to 618.36, 924.78 and 560.94 is: 838.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.36 : 924.78 = 560.94 : x
  2. Step 2: Convert to fraction form
    618.36/924.78 = 560.94/x
  3. Step 3: Cross multiply
    618.36x = 924.78 × 560.94
  4. Step 4: Simplify right side
    618.36x = 518,746.09
  5. Step 5: Solve for x
    x = 518,746.09/618.36
  6. Step 6: Final answer
    x = 838.91

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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.