Home / 940.04-1,410.36-420.40

Finding the Fourth Proportional to 940.04, 1,410.36 and 420.40

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Solution

The fourth proportional to 940.04, 1,410.36 and 420.40 is: 630.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.04 : 1,410.36 = 420.40 : x
  2. Step 2: Convert to fraction form
    940.04/1,410.36 = 420.40/x
  3. Step 3: Cross multiply
    940.04x = 1,410.36 × 420.40
  4. Step 4: Simplify right side
    940.04x = 592,915.34
  5. Step 5: Solve for x
    x = 592,915.34/940.04
  6. Step 6: Final answer
    x = 630.73

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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.