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Finding the Fourth Proportional to 907.04, 1,359.99 and 419.46

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Solution

The fourth proportional to 907.04, 1,359.99 and 419.46 is: 628.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.04 : 1,359.99 = 419.46 : x
  2. Step 2: Convert to fraction form
    907.04/1,359.99 = 419.46/x
  3. Step 3: Cross multiply
    907.04x = 1,359.99 × 419.46
  4. Step 4: Simplify right side
    907.04x = 570,461.41
  5. Step 5: Solve for x
    x = 570,461.41/907.04
  6. Step 6: Final answer
    x = 628.93

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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.