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Finding the Fourth Proportional to 970.03, 1,455.90 and 508.42

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Solution

The fourth proportional to 970.03, 1,455.90 and 508.42 is: 763.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.03 : 1,455.90 = 508.42 : x
  2. Step 2: Convert to fraction form
    970.03/1,455.90 = 508.42/x
  3. Step 3: Cross multiply
    970.03x = 1,455.90 × 508.42
  4. Step 4: Simplify right side
    970.03x = 740,208.68
  5. Step 5: Solve for x
    x = 740,208.68/970.03
  6. Step 6: Final answer
    x = 763.08

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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.