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Finding the Fourth Proportional to 970.86, 1,337.51 and 675.62

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Solution

The fourth proportional to 970.86, 1,337.51 and 675.62 is: 930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.86 : 1,337.51 = 675.62 : x
  2. Step 2: Convert to fraction form
    970.86/1,337.51 = 675.62/x
  3. Step 3: Cross multiply
    970.86x = 1,337.51 × 675.62
  4. Step 4: Simplify right side
    970.86x = 903,648.51
  5. Step 5: Solve for x
    x = 903,648.51/970.86
  6. Step 6: Final answer
    x = 930.77

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Double scale
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1.5x scale

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.