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Finding the Fourth Proportional to 1,051.66, 1,451.32 and 579.53

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Solution

The fourth proportional to 1,051.66, 1,451.32 and 579.53 is: 799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.66 : 1,451.32 = 579.53 : x
  2. Step 2: Convert to fraction form
    1,051.66/1,451.32 = 579.53/x
  3. Step 3: Cross multiply
    1,051.66x = 1,451.32 × 579.53
  4. Step 4: Simplify right side
    1,051.66x = 841,083.48
  5. Step 5: Solve for x
    x = 841,083.48/1,051.66
  6. Step 6: Final answer
    x = 799.77

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1.5x scale

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.