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Finding the Fourth Proportional to 1,026.04, 1,539.58 and 513

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Solution

The fourth proportional to 1,026.04, 1,539.58 and 513 is: 769.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.04 : 1,539.58 = 513 : x
  2. Step 2: Convert to fraction form
    1,026.04/1,539.58 = 513/x
  3. Step 3: Cross multiply
    1,026.04x = 1,539.58 × 513
  4. Step 4: Simplify right side
    1,026.04x = 789,804.54
  5. Step 5: Solve for x
    x = 789,804.54/1,026.04
  6. Step 6: Final answer
    x = 769.76

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.