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Finding the Fourth Proportional to 660.54, 985.67 and 573.06

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Solution

The fourth proportional to 660.54, 985.67 and 573.06 is: 855.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.54 : 985.67 = 573.06 : x
  2. Step 2: Convert to fraction form
    660.54/985.67 = 573.06/x
  3. Step 3: Cross multiply
    660.54x = 985.67 × 573.06
  4. Step 4: Simplify right side
    660.54x = 564,848.05
  5. Step 5: Solve for x
    x = 564,848.05/660.54
  6. Step 6: Final answer
    x = 855.13

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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.