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Finding the Fourth Proportional to 651.65, 898.80 and 612.46

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Solution

The fourth proportional to 651.65, 898.80 and 612.46 is: 844.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.65 : 898.80 = 612.46 : x
  2. Step 2: Convert to fraction form
    651.65/898.80 = 612.46/x
  3. Step 3: Cross multiply
    651.65x = 898.80 × 612.46
  4. Step 4: Simplify right side
    651.65x = 550,477.87
  5. Step 5: Solve for x
    x = 550,477.87/651.65
  6. Step 6: Final answer
    x = 844.75

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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.