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Finding the Fourth Proportional to 651.01, 898 and 485.39

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Solution

The fourth proportional to 651.01, 898 and 485.39 is: 669.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.01 : 898 = 485.39 : x
  2. Step 2: Convert to fraction form
    651.01/898 = 485.39/x
  3. Step 3: Cross multiply
    651.01x = 898 × 485.39
  4. Step 4: Simplify right side
    651.01x = 435,880.22
  5. Step 5: Solve for x
    x = 435,880.22/651.01
  6. Step 6: Final answer
    x = 669.54

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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.