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Finding the Fourth Proportional to 1,064.76, 1,470.06 and 651

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Solution

The fourth proportional to 1,064.76, 1,470.06 and 651 is: 898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.76 : 1,470.06 = 651 : x
  2. Step 2: Convert to fraction form
    1,064.76/1,470.06 = 651/x
  3. Step 3: Cross multiply
    1,064.76x = 1,470.06 × 651
  4. Step 4: Simplify right side
    1,064.76x = 957,009.06
  5. Step 5: Solve for x
    x = 957,009.06/1,064.76
  6. Step 6: Final answer
    x = 898.80

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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.