Home / 1,030.48-1,421.79-632.35

Finding the Fourth Proportional to 1,030.48, 1,421.79 and 632.35

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Solution

The fourth proportional to 1,030.48, 1,421.79 and 632.35 is: 872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.48 : 1,421.79 = 632.35 : x
  2. Step 2: Convert to fraction form
    1,030.48/1,421.79 = 632.35/x
  3. Step 3: Cross multiply
    1,030.48x = 1,421.79 × 632.35
  4. Step 4: Simplify right side
    1,030.48x = 899,068.91
  5. Step 5: Solve for x
    x = 899,068.91/1,030.48
  6. Step 6: Final answer
    x = 872.48

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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.