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Finding the Fourth Proportional to 845.16, 1,266.60 and 358.08

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Solution

The fourth proportional to 845.16, 1,266.60 and 358.08 is: 536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.16 : 1,266.60 = 358.08 : x
  2. Step 2: Convert to fraction form
    845.16/1,266.60 = 358.08/x
  3. Step 3: Cross multiply
    845.16x = 1,266.60 × 358.08
  4. Step 4: Simplify right side
    845.16x = 453,544.13
  5. Step 5: Solve for x
    x = 453,544.13/845.16
  6. Step 6: Final answer
    x = 536.64

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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.