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Finding the Fourth Proportional to 832.36, 1,148.72 and 612.32

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Solution

The fourth proportional to 832.36, 1,148.72 and 612.32 is: 845.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.36 : 1,148.72 = 612.32 : x
  2. Step 2: Convert to fraction form
    832.36/1,148.72 = 612.32/x
  3. Step 3: Cross multiply
    832.36x = 1,148.72 × 612.32
  4. Step 4: Simplify right side
    832.36x = 703,384.23
  5. Step 5: Solve for x
    x = 703,384.23/832.36
  6. Step 6: Final answer
    x = 845.05

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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.