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Finding the Fourth Proportional to 1,059.80, 1,582.14 and 904.10

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Solution

The fourth proportional to 1,059.80, 1,582.14 and 904.10 is: 1,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.80 : 1,582.14 = 904.10 : x
  2. Step 2: Convert to fraction form
    1,059.80/1,582.14 = 904.10/x
  3. Step 3: Cross multiply
    1,059.80x = 1,582.14 × 904.10
  4. Step 4: Simplify right side
    1,059.80x = 1,430,408.25
  5. Step 5: Solve for x
    x = 1,430,408.25/1,059.80
  6. Step 6: Final answer
    x = 1,349.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.