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Finding the Fourth Proportional to 845.07, 1,165.83 and 530.12

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Solution

The fourth proportional to 845.07, 1,165.83 and 530.12 is: 731.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.07 : 1,165.83 = 530.12 : x
  2. Step 2: Convert to fraction form
    845.07/1,165.83 = 530.12/x
  3. Step 3: Cross multiply
    845.07x = 1,165.83 × 530.12
  4. Step 4: Simplify right side
    845.07x = 618,029.80
  5. Step 5: Solve for x
    x = 618,029.80/845.07
  6. Step 6: Final answer
    x = 731.34

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Double scale
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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.