Home / 1,036.36-1,555.08-420.52

Finding the Fourth Proportional to 1,036.36, 1,555.08 and 420.52

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Solution

The fourth proportional to 1,036.36, 1,555.08 and 420.52 is: 631.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.36 : 1,555.08 = 420.52 : x
  2. Step 2: Convert to fraction form
    1,036.36/1,555.08 = 420.52/x
  3. Step 3: Cross multiply
    1,036.36x = 1,555.08 × 420.52
  4. Step 4: Simplify right side
    1,036.36x = 653,942.24
  5. Step 5: Solve for x
    x = 653,942.24/1,036.36
  6. Step 6: Final answer
    x = 631.00

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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.