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Finding the Fourth Proportional to 683.01, 942.10 and 486.77

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Solution

The fourth proportional to 683.01, 942.10 and 486.77 is: 671.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.01 : 942.10 = 486.77 : x
  2. Step 2: Convert to fraction form
    683.01/942.10 = 486.77/x
  3. Step 3: Cross multiply
    683.01x = 942.10 × 486.77
  4. Step 4: Simplify right side
    683.01x = 458,580.09
  5. Step 5: Solve for x
    x = 458,580.09/683.01
  6. Step 6: Final answer
    x = 671.41

Related Problems

Find fourth proportional to 341.51, 471.05 and 243.38
Half scale
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Double scale
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Similar ratio
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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.