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Finding the Fourth Proportional to 690.04, 951.78 and 585.82

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Solution

The fourth proportional to 690.04, 951.78 and 585.82 is: 808.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.04 : 951.78 = 585.82 : x
  2. Step 2: Convert to fraction form
    690.04/951.78 = 585.82/x
  3. Step 3: Cross multiply
    690.04x = 951.78 × 585.82
  4. Step 4: Simplify right side
    690.04x = 557,571.76
  5. Step 5: Solve for x
    x = 557,571.76/690.04
  6. Step 6: Final answer
    x = 808.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.