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Finding the Fourth Proportional to 651.66, 899.15 and 626.15

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Solution

The fourth proportional to 651.66, 899.15 and 626.15 is: 863.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.66 : 899.15 = 626.15 : x
  2. Step 2: Convert to fraction form
    651.66/899.15 = 626.15/x
  3. Step 3: Cross multiply
    651.66x = 899.15 × 626.15
  4. Step 4: Simplify right side
    651.66x = 562,995.15
  5. Step 5: Solve for x
    x = 562,995.15/651.66
  6. Step 6: Final answer
    x = 863.94

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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.