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Finding the Fourth Proportional to 904.86, 1,248.19 and 684.67

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Solution

The fourth proportional to 904.86, 1,248.19 and 684.67 is: 944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.86 : 1,248.19 = 684.67 : x
  2. Step 2: Convert to fraction form
    904.86/1,248.19 = 684.67/x
  3. Step 3: Cross multiply
    904.86x = 1,248.19 × 684.67
  4. Step 4: Simplify right side
    904.86x = 854,598.25
  5. Step 5: Solve for x
    x = 854,598.25/904.86
  6. Step 6: Final answer
    x = 944.45

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Half scale
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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.